Unlike possibly all of our other Top 5 lists, this one changes not only when new books come out, but also as we discover - or sometimes re-discover - books which might have been around for a while, but which we think deserve your attention.

So, it's kind of like a Man Booker Prize... but for outdoor writing. And we'll be updating this page, so keep popping back to stay up-to-date with our selection.

Hidden Histories - Mary-Ann Ochota

The sub-heading of this book is "A Spotter's Guide to the British Landscape" - and it certainly is that. Although at 288 pages and with it's size, perhaps not so much of an "on location" spotters' book, as a reference guide to make sense of what you've seen.

So no matter what you've seen around the countryside of Britain - lumps & bumps, standing stones, highways & byways - Mary-Ann Ochota explains them all, with a lovely light writing style which is perfectly suited to the topic. Explaining everything from stalled tombs to wayside crosses, the text is littered with where you can find many examples, together with OS grid references.

As a reference guide, this is top notch; it's a sheer feast for the eyes - both literary and in imagery - and very much in the Tristan Gooley mould of explaining the landscape around us - and that is meant as a complement. Read this book and then when you are out on your walks around Britain you'll have all the information you need to make sense of what the British landscape is telling you.

It's not a new book - in fact it's not Tristan's latest book at all - but we feel The Natural Explorer is a book every true walker should either have on their bookshelf or at least have read.

It's not a walking guide; you you wont find a map or the distance to the next pub, but you will learn how to read, understand and connect with the landscape. It's about learning how to navigate not just using the moon, stars and the sun, but also by tree bark, spider's webs and ruts on a track.

Tristan has a flowing and accessible writing style which is peppered with humour - which makes all his knowledge contained in the book much easier to read and understand.

Geocaching is a hi-tech version of treasure hunting, using GPS units or similar apps on smartphones. It's been around for a while, but has enjoyed increased popularity with the advent of smartphone GPS apps - meaning that anyone can now play, not just those with an expensive GPS device.

But it is very handy to have a hand holding you through the beginnings; to give you an introduction into what to do and how to do it - and this clearly written and concise book is perfect for this. It's writer, Terry Marsh, is familiar name in the outdoor world, with over a 100 books to his name, and he's a devoted geocacher - so there's no-one more suited to explain this activity.

So, if you are looking to get into geocaching, this is the book to explain it all.

The ever-expanding range of Top 10 Walks books have some fantastic titles in their midst, covering a wide area of the north of England and the Welsh coast. But this, in our opinion, is the best.

Not only does it challenge the established order and thinking that the Lake District is all about Mr Wainwright (something we're always very happy to challenge ourselves!), but it shows a different side to the Lakes - one woodland and forest side. It's full of stunning photos, many of which were taken in the best time for woodland walks - the Autumn - and the 10 routes are a great insight in to the world of the Lake District's wooded areas. In fact, the very first one at Claife Heights is a longer version of our one in season one!

The highlight, though, is that the book is written by Vivienne Crow, an extremely knowledgeable writer about the Cumbrian area, who writes with a lot of passion, charm and vigor. Certainly one for all fans of the Lake District... especially ones who don't want to go up yet another mountain...

The Hadrian's Wall Path is one of England and Wales' National Trails, with 84 miles of trail walking... but in this guide book written by expert Mark Richards, it is broken down into 10 stages which makies it perfect as a first long-distance walking route.

In fact, it really is two books in one, as the Path is described in either direction - so Mark's preferred west-east, and then the alternative east-west. This is achieved in a very clever way, by including in the west-east section all the full description along with detailed background information, and put just the route instructions for the east-west in a separate colour-coded section at the end of each stage.

The descriptions paint as vivid a picture as any of the photographs do, and so fans of Mark's work won't be disappointed with this. It was also one of the first of a new-style of Cicerone books, with an updated layout and a route map booklet with 1:25,000 Explorer-sized OS mapping.